It seems to me that your “problem” isn’t a problem at all. You’re human and being human sucks a lot, and you have addiction-depression, which means that it’s easy for you to turn to external substances to feel better and that you feel worse when you don’t use them. The underlying depression-addiction is really your issue and until you find a way to treat that, nothing else will really seem like (or have any chance to be) a “cure.” I think that addiction-depression is tied to trauma (might be yours or an ancestor’s), and that’s likely the best thing to deal with.